Huawei and Honor have announced the roll-out of EMUI 9.1 (or Magic UI 2.1) for various phones released in or around 2018. This new OS version is probably best known for GPU Turbo 3.0, which optimizes performance when various compatible game apps are opened. The update also adds a new file-system to Magic UI devices.
https://www.notebookcheck.net/New-software-updates-for-slightly-older-Honor-and-Huawei-phones-appear.427779.0.html